KI (aq) + 3 Cl2 (g) + 3 H2O (l) → KIO3 (aq) + 6 HCl (aq)
This is an oxidation-reduction (redox) reaction:
I-I - 6 e- → IV (oxidation)
6 Cl0 + 6 e- → 6 Cl-I (reduction)
KI is a reducing agent, Cl2 is an oxidizing agent.
Reactants:
Products:
- KIO3 – Potassium iodate
- HCl – Chlorane , Hydrogen chloride
- Other names: Hydrochloric acid , M , Uriatic acid
- Appearance: Colorless, transparent liquid, fumes in air if concentrated ; Colorless gas ; Colourless compressed liquefied gas with pungent odour ; Colorless to slightly yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.]